Quarterly report pursuant to Section 13 or 15(d)

Schedule of Estimated Fair Value of Level 3 Contingent Royalty Obligation (Details)

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Schedule of Estimated Fair Value of Level 3 Contingent Royalty Obligation (Details) - Fair Value, Inputs, Level 3 [Member]
$ in Thousands
3 Months Ended
Mar. 31, 2022
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Balance at December 31, 2021 $ 1,760
Change in estimated fair value of contingent royalty obligation (29)
Balance at March 31, 2022 $ 1,731